Ngakhale PP (polypropylene) ndi PVC (polyvinyl chloride)malo okhala ndi machubu a lamellaamagwiritsidwa ntchito pokonza madzi, pali kusiyana kwakukulu pa zinthu zakuthupi, magwiridwe antchito ndi njira zoyikira.
1. Kusiyana kwa Zinthu
| Chinthu | PP | PVC |
| Kuchulukana (g/cm3) | 0.9-0.91 | 1.38-1.45 |
| Malo osungunuka (℃) | 160-170 | 75-90 |
| Kutentha kosokoneza kutentha (℃) | 110（0.45MPa） | 65（0.45MPa） |
| Choyezera chokulitsa mzere | 1.5×10⁻⁴/℃ | 6×10⁻⁵/℃ |
| Mphamvu yokoka (MPa) | 30-40 | 50-60 |
2. Kuyerekeza kwa makhalidwe a makina
| Chinthu | PP | PVC |
| Kukana kugundana | Zosaoneka bwino (<0 ℃) | Pitirizani kupirira (-15 ℃) |
| Kupanikizika kwa nthawi yayitali | Kugwedezeka kumachitika nthawi zambiri mukanyamula katundu mosalekeza (chithandizo chikufunika kukulitsidwa) | Kukana bwino kukwawa |
| Moyo wautumiki | Zaka 3-5 | Yaitali 20%-30% kuposa PP |
| Kuchuluka kwa kukonza | Zaka 3 | Zaka 5 |
3. Kusiyana kwa mankhwala a madzi
| Chinthu | PP | PVC |
| Kusalala kwa pamwamba | 0.8-1.2μm | 0.4-0.6μm |
| Ngodya yotsetsereka ya matope | 55°-60° | 50°-55° |
| Kumamatira kwa biofilm | Wofooka (wosakonda madzi) | Wamphamvu (pamwamba pa polar) |
| Kuthamanga kwa kayendedwe ka kapangidwe (m/h) | 1.0-1.5 | 0.8-1.2 |
4. Kusiyana kwa kukhazikitsa
PP: Kuwotcherera mpweya wotentha (260-300 ℃) kuyenera kugwiritsidwa ntchito
PVC: Ikhoza kulumikizidwa ndi zosungunulira kapena kulumikizidwa pa kutentha kochepa (180-220 ℃)
Alinna Wang
Imelo:alinna@bestpacking.cn
Whatsapp:+8617379954122 Wechat:karol1005
Skype:moyo:.cid.7e9f6df9c6d4d15c
Nthawi yotumizira: Epulo-24-2025